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    Author(s): Gene D. Amman; Mark D. McGregor; Robert E. Jr. Dolph
    Date: 1989
    Source: Forest Insect & Disease Leaflet 2. [Portland, OR:] U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Region State & Private Forestry
    Publication Series: Forest Insect and Disease Leaflet (FIDL)
    Station: Pacific Northwest Research Station
    PDF: View PDF  (507.96 KB)

    Description

    The mountain pine beetle, Dendroctonus ponderosae Hopkins, is a member of a group of beetles known as bark beetles: Except when adults emerge and attack new trees, the mountain pine beetle completes its life cycle under the bark. The beetle attacks and kills lodgepole, ponderosa, sugar, and western white pines. Outbreaks frequently develop in lodgepole pine stands that contain well-distributed, large-diameter trees or in dense stands of pole-sized ponderosa pine. When out-breaks are extensive, millions of trees may be killed each year. Periodic losses of high-value, mature sugar and western white pines are less wide-spread but also serious.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Amman, Gene D.; McGregor, Mark D.; Dolph, Robert E. Jr. 1989. Mountain Pine Beetle. Forest Insect & Disease Leaflet 2. [Portland, OR:] U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Region State & Private Forestry

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